org.entityfs.util.io
Class LockAwareFileOutputStream

java.lang.Object
  java.io.OutputStream
      java.io.FileOutputStream
          org.entityfs.util.io.LockAwareFileOutputStream

All Implemented Interfaces:

Closeable, Flushable

public class LockAwareFileOutputStream
extends FileOutputStream

This is a FileOutputStream that keeps a reference to the write lock of the open EFile. It is required that the lock is held by the calling thread when it is calling any of the methods on instances of this class. When the stream is closed, the lock is unlocked if it is still locked.

FileDescriptor:s and FileChannel:s from this class are not lock-aware.

Instances of this class are not thread safe.

Since:

1.0

Author:

Karl Gustafsson

See Also:

LockAwareFileOutputStreamFactoryImpl

Constructor Summary

LockAwareFileOutputStream(File f, boolean append, EntityLock l)

LockAwareFileOutputStream(FileDescriptor fd, EntityLock l)

LockAwareFileOutputStream(File f, EntityLock l)

LockAwareFileOutputStream(String name, boolean append, EntityLock l)

LockAwareFileOutputStream(String name, EntityLock l)

Method Summary

void	close() This will unlock the write lock if it is still locked by the current thread.
void	flush()
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.io.FileOutputStream

finalize, getChannel, getFD

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LockAwareFileOutputStream

public LockAwareFileOutputStream(File f,
                                 EntityLock l)
                          throws FileNotFoundException

Throws:

FileNotFoundException

LockAwareFileOutputStream

public LockAwareFileOutputStream(File f,
                                 boolean append,
                                 EntityLock l)
                          throws FileNotFoundException

Throws:

FileNotFoundException

LockAwareFileOutputStream

public LockAwareFileOutputStream(FileDescriptor fd,
                                 EntityLock l)

LockAwareFileOutputStream

public LockAwareFileOutputStream(String name,
                                 EntityLock l)
                          throws FileNotFoundException

Throws:

FileNotFoundException

LockAwareFileOutputStream

public LockAwareFileOutputStream(String name,
                                 boolean append,
                                 EntityLock l)
                          throws FileNotFoundException

Throws:

FileNotFoundException

Method Detail

close

public void close()
           throws IOException

This will unlock the write lock if it is still locked by the current thread.

Specified by:

close in interface Closeable

Overrides:

close in class FileOutputStream

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException

write

public void write(byte[] b)
           throws IOException

Overrides:

write in class FileOutputStream

Throws:

IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException

Overrides:

write in class FileOutputStream

Throws:

IOException

write

public void write(int b)
           throws IOException

Overrides:

write in class FileOutputStream

Throws:

IOException